Substitute for gold-leaf.



F. DEMEL.

' SUBSTITUTE FOR GOLD LEAF.

AAAAAAAAAAAAAAAAA UG.14, 1912. I 1,076,197. Patented Oct. 21, 1913;

9= Gold 'Patent No. 1,056,641, issued March 18th.

FRITZ DEMEL, OF LONDON, ENGLAND.

SUBSTITUTE FOR GOLD-LEAF.

Specification of Letters Patent.

Patented Oct. 21, 1913.

Original application filed May 1,1911, Serial No. 624,227. Divided'and this'applicat'ion filed August 14, 1912. Serial No. 715,134.

dress is 63 Theobalds road, in the county of London, England, gold-beater, have invented a certain new and useful Substitute for Gold-Leaf, of which the following is a specification.

My invention, which is a division of mv 1913, consists in producing a substitute for gold leaf which possesses the properties essential for the applications of gold leaf, particularly in the book binding trade, namely a degree of thinness suflicient for the production of clear impressions with fine lines and a low degree ofcoherence which renders it possible to remove with a brush, for instance, such portions of the leaf as have not adhered to the surface to be covered.

Figure 1 is a perspective view of a portion of a forming plate on which a portion of a sheet of gold leaf has been formed, and Fig. 2 is a perspective view of a portion of a sheet of gold leaf after it has been removed from the plate;

The mode of making the metal film con; sists'as shown by Fig. 1 of the accompanying diagrammatic drawing in first coating a smooth surface, such asthe surface of a glam plate a, with a thin layer 6 of an adhesive material, such as gutt-a-percha apis electrolytically deposited on, the surface of the layer of metal (1. The plate thus coated is immersed in a solvent for guttapercha, which solvent, however, is incapable of attacking metal. The gutta-percha b is then in whole or part removed by the solvent, and there is left as shown at Fig. 2, a metallic leaf 0, d, e of the required properties, and carrying an amount of gold per unit area which may be considerably less than that contained per unit area of beaten gold leaf. The metallic leaf may be received on paper or the like as it leaves the glass. Should a certain amount of guttapercha remain on the back of the metal leaf, the leaf when employed for gold stamping can be used without any additional adhesive,

While I have herein described, and have indicated on the drawings, particular materials which may be employed, I desire it understood that I do not limit myself to the i I use of these materials in all cases.

Having thus described my invention and the best means I know of carrying the same into practical effect, I claim A substitute for gold leaf consisting of a metallic film, a layer of metal deposit thereon and a layer of gold deposit on the said layer of metal, the whole constituting an extremely thin leaf resembling gold leaf in its power of producing clear impressions with fine lines and in being so little coherent that portions which do not adhere to the surface to whichthe leaf is applied can be removed by a brush.

In witness whereof I have signed my name to this specification in the presence of two subscribing witnesses. 1

- FRITZ DEMEL. Witnesses:

- Josn'rn WlLLARD,

WAL'ran J. Sxmmm. 

